InviteRobot - Instant subscription for paid Slack communities
Prompt - Prompt provides fully-integrated writing education solutions, combining instruction, curriculum, and feedback. We support educational institutions, companies, and individuals.
SlackPass - Subscription access to anything with Slack
nodo - Manage your daily tasks in the command line
Grapevine Surveys - Grapevine is an online survey tool for employee surveys.
Commandline Challenge - Test your command line skills